Neonatal Laryngeal Mask Airway-NLMA (NLMA-0 and NLMA-1)

ABSTRACT

The disclosed Neonatal Laryngeal Mask Airway-0 and 1 (NLMA-0, NLMA-1) device includes an inflatable cuff, an airway tube, a connector, backplate with an aperture. The cuff is insertable through mouth of the patient to an inserted location within patient oropharynx. The cuff of the NLMA surrounds glottis opening and opening in the backplate of the NLMA. The airway tube is a communicating passage between connector and inflatable cuff. The connector is attached to the outer end of the airway tube and inflatable cuff attached to the inner portion of the airway tube. 
     The V shape connector can be attached to the resuscitation bag at one end and to the tracheal catheter at the other. This tracheal catheter passes through connector, airway tube and through the opening in the backplate into the trachea, in order to administer surfactant into the lung.

BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings:

FIG. 1 is a lateral view of NLMA in-situ, the main-cuff where the tracheal catheter is transversely going into the trachea from glottis opening. This Fig. showing the longitudinal view of the internal-drain tube along the backplate.

FIG. 2 is a simplified overall front view of the NLMA. It show NLMA device of the invention by outlines.

FIG. 3 is a simplified view showing the NLMA device of FIG. 1 without tracheal catheter in place.

FIGS. 4-A, 4-B and 4-C are plan cross sectional views of the NLMA device of FIG. 1, drawing shows different parts of NLMA along transverse axis.

FIGS. 5-A, 5-B and 5-C are the front, back and lateral views of the NLMA cuff.

FIGS. 6-A, 6-B, 6-C and 6-D are the sectional plan views showing the diagonal dimension of the cuff in anterior-posterior dimension of NLMA

FIGS. 7-A, 7-B, 7-C 7-D are the sectional plan views showing the diagonal dimension of the NLMA-1 in anterior-posterior dimension.

FIGS. 8-A, 8-B, 8-C and 8-D are the sectional plan views showing the diagonal dimension of the NLMA-0 in anterior-posterior dimension.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 A Neonatal laryngeal-mask airway (NLMA) device of the present invention is designated in its full length in FIG. 1 and FIG. 2. The NLMA device, is inserted in a deflated condition into the throat 52, the upper surface of which is bounded by palates 51. The NLMA device is lodged in the pharynx of the throat at the base of the hypo-pharynx 55 where the throat divides into the trachea 55 and esophagus 75. A lower portion of the NLMA device reaches to the base of the hypo-pharynx 55 and the tip or the distal part of the NLMA cuff 9 rest on the esophageal opening 75. After the NLMA device is lodged in the pharynx the NLMA device is inflated. Tracheal catheter 44 is passing through connector 10 through tracheal tube 7, through laryngeal cuff 9 and glottis opening 14 into the trachea 55.

FIG. 2 of the Neonatal Laryngeal Mask Airway (NLMA) device is shown comprising an airway tube 7, a back plate 15, having an airway port 14 through which the airway tube 7 can establish ventilation passage as well as can pass tracheal catheter 44 can pass from tracheal tube 12 into the trachea 55. There is small air inflating tube 6 connect NLMA cuff 9, to air reservoir 5 to the check valve 4, that is use to inject air into the NLMA bloon for inflation.

FIG. 3 is the frontal view of the neonatal Laryngeal Airway (NLMA), the backplate 15 is surrounded by a cuff 9 comprising an inflatable ring which, when inflated, has an asymmetrical oval shape. The tracheal cuff 9 is circumferentially united to the backplate 15 in essentially a single plane, there is a communicating hole 14 at the posterior end of the backplate 15 that is communicating to trachea 55 distally and communicating to the tracheal tube 7 at its proximal end.

This backplate hole facilitates passage of tracheal catheter 44 into the trachea 55 for the administration of surfactant. An externally accessible tube 6 and inflation port 13 on the main-cuff 9 are the means of supplying air to the main-cuff and of extracting air from (and therefore collapsing) the main-cuff for purposes of insertion in or removal from the patient. The check-valve 5 is disposed in the tube 6 for holding a given inflation or holding a given deflation of the cuff 9.

FIG. 4-A shows cross sectional view of the tracheal tube 7, which is curved shape single luman tube that is attached to connector 10 of the Neonatal Laryngeal Mask Airway (NLMA) at the distal end and at proximal end it connect with the backplate 8 and main cuff 9.

FIG. 4-B shows circular back plate 8, connected to tracheal tube 7 at the distal end and attached to main laryngeal cuff 9 at the proximal end.

FIG. 4-C is the cross sectional lateral view of the proximal end of the NLMA. This is single luman tube, proximal end of the back plate 8 connected to the main laryngeal cuff 9 and distal end connected to tracheal tube 7.

FIG. 5-A shows the front view of the Neonatal Laryngeal Mask. NLMA cuff 9 is curve and pointed at the distal end and at the proximal end connected to the small connector 77 to inflate air into the laryngeal cuff 9. Backplate 8 has a one-piece, integral spoon-shape with the oval portion, which is connected to laryngeal cuff 9 at the distal end and attached to the tracheal tube 7 at proximal end. There is an opening 14 at the central distal end of the backplate that communicate tracheal tube 7 to the cuff 9.

FIG. 5-B shows the back view of the Neonatal Laryngeal Mask NLMA cuff 9, is curve and pointed at the distal end and at the proximal end connected to the small connector 77 to inflate air into the laryngeal cuff 9. Backplate 8 has a one-piece, integral spoon-shape with the oval portion, which is connected to laryngeal cuff 9 at the distal end and attached to the tracheal tube 7 at proximal end. There is an opening 14 at the central distal end of the backplate that communicate tracheal tube 7 to the tracheal cuff 9.

FIG. 5-C is the lateral view of the laryngeal cuff. Backplate 8 is perpendicularly attached to the laryngeal cuff 9.

FIG. 6-A shows the lateral view of diagonal dimention of Neonatal Laryngeal Mask Airway (NLMA). Laryngeal Cuff 9 anterior external diameter in horizontal plane 24 is 8 millimeter and posterior external horizontal diameter 24 is 12 millimeter and middle 16 millimeter. Angle between cuff 6 and backplate 8 showing 23 is 30 degree angle.

FIG. 6-B shows the diagonal dimention of Neonatal Laryngeal Mask Airway (NLMA). Laryngeal Cuff 9 anterior external diameter in horizontal plane 17 is 8 millimeter and posterior external horizontal diameter 19 is 12 millimeter and middle 16 millimeter. Vertical external length 16 of the cuff is 30 millimeter.

FIG. 6-C shows the internal dimension of the laryngeal mask cuff. Tracheal tube 7 external diameters 27 is 7 mm and internal diameter 30 is 0.5 millimeter.

FIG. 6-D shows front view of the laryngeal mask dimentions. Vertical Internal dimension 43 of the laryngeal cuff 9 is 20 millimeter, anterior internal horizontal diameter is 3 millimeter and posterior end of the cuss internal horizontal diameter 40 is 8 millimeter. Angle between cuff 9 and backplate 8 showing 23 is 30 degree angle.

FIG. 7-A shows the oblique lateral diagonal dimention of Neonatal Laryngeal Mask Airway-1 (NLMA-1). The laryngeal cuff 9 attached to the back plate 8.

FIG. 7-B shows the anterior diagonal dimention of the Neonatal Laryngeal Mask Airway-1 (NLMA-1). The Laryngeal Cuff 9 anterior external diameter in horizontal plane is 110 millimeter and posterior external horizontal diameter is 17 millimeter and middle 22 millimeter. Vertical external length the cuff is 40 millimeter.

FIG. 7-C. Shows the cross sectional diagonal dimention of Neonatal Laryngeal Mask Airway-1. Tracheal tube 7 external diameters are 7 mm and internal diameter is 1 millimeter.

FIG. 7-D shows the front anterior diagonal dimention of Neonatal Laryngeal Mask Airway-1 (NLMA-1). The Internal dimension of the cuff 9, anterior internal horizontal diameter is 4 millimeter and posterior end of the cuss internal horizontal diameter is 9 millimeter and internal cuff length is 28 millimeter.

FIG. 8-A shows the oblique lateral diagonal dimention of Neonatal Laryngeal Mask Airway-0 (NLMA-0). The laryngeal cuff 9 attached to the back plate 8.

FIG. 8-B shows the anterior diagonal dimention of the Neonatal Laryngeal Mask Airway-0 (NLMA-0). The Laryngeal Cuff 9 anterior external diameter in horizontal plane is 8 millimeter and posterior external horizontal diameter is 16 millimeter and middle 18 millimeter. Vertical external length the cuff is 35 millimeter.

FIG. 8-C. Shows the cross sectional diagonal dimention of Neonatal Laryngeal Mask Airway-1. Tracheal tube 7 external diameters are 7 mm and internal diameter is 0.5 millimeter.

FIG. 8-D shows the front anterior diagonal dimention of Neonatal Laryngeal Mask Airway-0 (NLMA-0). The Internal dimension of the cuff 9, anterior internal horizontal diameter is 4 millimeter and posterior end of the cuss internal horizontal diameter is 8 millimeter and internal cuff length is 25 millimeter.

While the invention has been described by reference to certain preferred embodiments, it should be understood that numerous changes could be made within the spirit and scope of the inventive concept. Accordingly, it is intended that the invention not be limited to the disclosed embodiments. 

What is claim for Neonatal Laryngeal Mask airway (NLMA-0 and NLMA-1):
 1. A Neonatal laryngeal mask airway size 0 (NLMA-0): The device as claimed is an artificial airway device to facilitate lung ventilation in premature infant with gestational age of 30 weeks of gestation to 35 weeks of gestation or birth weight 1500 grams to 2500 grams, as well as when the mask is positioned for sealing the airway tube to the laryngeal inlet, this device can be used to establish reliable airway in an emergent situation without the need of endotracheal intubation.
 2. The device as claimed in claim 1 is designed to administer surfactant to premature infant at gestational age of 30 weeks to 35 weeks of gestation, gestation or 1500 grams to 2500 grams weight infant suffering from respiratory distress syndrome. This device is capable of introducing a tracheal suction catheter device through connector, via tracheal tube to the inflatable cuff into the tracheal opening and airway of a patient, to deliver surfactant into the tracheal without endotracheal intubation in these premature infants.
 3. A Neonatal laryngeal mask airway size 1 (NLMA-1): The device as claimed is an artificial airway device to facilitate lung ventilation in premature infant with gestational age of 35 weeks of gestation to 3 months of life or birth weight of 2500 grams to 5000 grams, as well as when the mask is positioned for sealing the airway tube to the laryngeal inlet, this device can be used to establish reliable airway in an emergent situation without the need of endotracheal intubation as well as to establish airway for anesthesia administration.
 4. The device as claimed in claim 3 is designed to be used in infant at gestational age of 35 weeks to 3 months of life or birth weight of 2500 grams to 5000 grams weight infants. This device is also capable of introducing a tracheal suction catheter device through connector, via tracheal tube to the inflatable cuff into the tracheal opening and airway of a patient. This device is capable to deliver surfactant into the tracheal without endotracheal intubation in these group of infants.
 5. The device as claimed in claim 1 comprising: A roof plate defined as a curved plate with the convex surface facing proximal end of the laryngeal mask. The roof plate has a central opening present posteriorly and at the proximal part of the laryngeal cuff which ends in a tubular shape opening proximally. Laryngeal tube extends into the proximal tubular opening of the laryngeal cuff. An inflatable cuff with a central aperture with precise diagonal diameter of the cuff that is insertable through mouth of a 30 weeks to 35 weeks premature newborn infant or infant birth weight of 1500 grams to 2500 grams infant. This device has external vertical diameter (length) of 3.5 cm (FIG. 7) internal vertical diameter (length) of 2.5 cm (FIG. 7). Horizontal cuff diameter comprise of Front External Diameter 0.8 cm, middle cuff external diameter 1.8 cm and posterior cuff external diameter of 1.6 cm. Cuff internal dimension consist of cuff Front Internal diameter of 0.4 cm, middle internal diameter of 1.2 cm and Posterior internal diameter of 0.8 cm. Laryngeal Cuff when inflated its thickness is 5+1.2 millimeter at the distal end and laryngeal cuff thickness 5.8+1.2 millimeter at the proximal end of the cuff where it is connected to the breathing tube. The cuff is fused at acute angle of 30 degree at the back plate in a way so it can be in close proximity to laryngeal opening. The device also consist of a breathing tube at one end which comprise of a removable single lumen connector that is connected to the ventilating bag at one end and a flexible airway tube at the other end, when only ventilation is desired for infants. This removable connector can be replace with double lumen V-shape connector when tracheal suction catheter need to be introduce for surfactant administration in infant with respiratory distress syndrome.
 6. The device as claimed in claim 1 comprising: A roof plate defined as a curved plate with the convex surface facing proximal end of the laryngeal mask. The roof plate has a central opening present posteriorly and at the proximal part of the laryngeal cuff which ends in a tubular shape opening proximally. Laryngeal tube extends into the proximal tubular opening of the laryngeal cuff. An inflatable cuff with a central aperture with precise diagonal diameter of the cuff that is insertable through mouth of a 35 weeks to 3 months of life or in infant birth weight of 2500 grams to 5000 grams infant. This device has external vertical diameter (length) of 4 cm (FIG. 8) internal vertical diameter (length) of 2.8 cm (FIG. 8). Horizontal cuff diameter comprise of Front External Diameter 1 cm, middle cuff external diameter 2.2 cm and posterior cuff external diameter of 1.7 cm. Cuff internal dimension consist of cuff Front Internal diameter of 0.4 cm. middle internal diameter of 1.3 cm and Posterior internal diameter of 0.9 cm. Laryngeal Cuff when inflated its thickness is 6+1.2 millimeter at the distal end and laryngeal cuff thickness 7+1.2 millimeter at the proximal end of the cuff where it is connected to the breathing tube. The cuff is fused at acute angle of 30 degree at the back plate in a way so it can be in close proximity to laryngeal opening. The device also consist of a breathing tube at one end which comprise of a removable single lumen connector that is connected to the ventilating bag at one end and a flexible airway tube at the other end, when only ventilation is desired for infants. This removable connector can be replace with double lumen V-shape connector when tracheal suction catheter need to be introduce for surfactant administration in infant with respiratory distress syndrome.
 7. Neonatal laryngeal-mask construction claim 1 and claim 3, comprising a backplate with an opening at the base elliptical in configuration, said back-plate including an airway-tube connecting formation on an inclined axis that is at an acute angle of 30 degree. A tracheal catheter tube can be introduce through connector extending from a location near patient's mouth extending through tracheal tube to distal end of the cuff the cuff is at the inserted location. Tracheal catheter pass through backplate hole into the glottis opening to the tracheal opening to have direct communication to administer surfactant through this device into the lungs without being endotracheal intubation. 